Review: Koss Porta Pro Wireless are the classic headphones plus Bluetooth – Six Colors
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Amazon.com: Koss BT539iK Wireless Bluetooth Over-Ear Headphones,On-Board Microphone and Touch Controls, Detachable Cord Included, Dark Grey and Black : Electronics
Amazon.com: Koss CS340BT QZ Wireless Bluetooth On-Ear Communication Headset, Active Noise Cancellation, On-Board Controls, Black : Electronics
Amazon.com: Koss KSC35 Wireless Bluetooth Ear Clip Headphones, in-Line Microphone with Remote, 6+ Hour Battery Life, Black : Electronics
Koss unveils less pricey Bluetooth headphone
Review: the Iconic Koss Porta Pro Headphones Have a New Bluetooth Version
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Amazon.com: Koss KPH7 Wireless Bluetooth On-Ear Headphones, On-Board Controls with Microphone, Lightweight Portable Fold Flat Design for Compact Storage, Black : Electronics